Maintenance on our network

From time to time we need to do maintenance to fix a fault or improve our service. If you’re experiencing a problem with the network, please use our Network Status Checker to see if we’re already working on it.

You can register for updates on how the fault is progressing. You can also speak to our advisers online with Live Chat.

Signal blackspots explained

Whatever network you’re on, your mobile signal can sometimes be less than perfect. But mobile signal issues aren’t always caused by how far you are from the nearest mobile phone mast.

Sometimes they happen because of the location of the building you’re in, or the building itself. We call these areas ‘blackspots' and all mobile phone networks around the world suffer from them. You can experience them wherever you are, even in cities with lots of mobile phone masts.

What causes blackspots?

Your location

If you're a long way from a mobile phone mast, your signal might be weaker.

Your environment

Buildings, hills and living in a basement or tower block can all block mobile signals.

Your phone

A low battery or out-of-date software can affect how your phone interacts with our network. See our help sections to get the best out of your phone.

Coverage in hard-to-reach places

Wi-Fi Calling

Wi-Fi Calling lets you make calls anywhere you have Wi-Fi, even when there’s no mobile signal.